Fig. 15

Cerebritis and parenchymal abscess formation in ROCM. Pre-operative imaging workup was performed at another institution. Post-operative MRI, performed at our institution, is presented. Coronal T2-FS image (a) demonstrates ill defined, hypointense soft tissue in the left ethmoid air cells, invading into the left anterior cranial / left olfactory fossa (dotted arrow). Axial T2W images of the brain (b, c) demonstrates the hypointense soft tissue (dotted arrow in B) along with vasogenic oedema in the left basifrotnal white matter (thin arrows in b, c). CE FS coronal T1W image (d) shows abnormal parenchymal enhancement (dotted arrow) of the left gyrus rectus suggesting cerebritis, due to fungal invasion. CE FS axial T1W image (e) shows a peripherally enhancing lesion (thick arrow) along the posterior portion of the left gyrus rectus. Axial diffusion weighted image (f) shows restricted diffusion within the peripherally enhancing lesion (thick arrow), suggesting abscess formation